java – 右边加入jpa

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
@Column(nullable = false)
private Long id;

@Size(max = 2147483647)
@Column(length = 2147483647)
private String data;

@JoinColumn(name = "buyer_id",referencedColumnName = "id")
@ManyToOne(fetch = FetchType.LAZY)
private Buyer buyer_id;

@OneToMany(mappedBy = "newrequest_id",fetch = FetchType.LAZY)
private Collection<Mapping> mappingCollection;

Mapping.java

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
@Column(nullable = false)
private Long id;

@JoinColumn(name = "seller_id",referencedColumnName = "id")
@ManyToOne(fetch = FetchType.LAZY)
private Seller seller_id;

@JoinColumn(name = "newrequest_id",referencedColumnName = "id")
@ManyToOne(fetch = FetchType.LAZY)
private NewRequest newrequest_id;

可以说,我有这样的记录.

new_request：

id(PK) |  data  | buyer_id(FK)
------------------------------
1      |  data1 |   1
2      |  data2 |   1
3      |  data3 |   2

映射：

id(PK) | newrequest_id(FK) | seller_id(FK)
------------------------------------------
1      |        1          |    1

注意：考虑买卖双方存在两个不同的表.

我想要所有与卖家映射的new_request.所以,预期产出：

id   | data  | buyer_id | seller_id
------------------------------------
1    | data1 |  1       |    1
2    | data2 |  1       |
3    | data3 |  2       |

我在JPA中尝试了以下查询：

select n.id,n.data,n.buyer_id,m.seller_id from Mapping m left join m.newrequest_id n

它只提供一个数据(输出行为1).

我使用本机查询通过右连接得到了我的结果.但我想用JPA查询来实现它.